From a dictionary of color names
#DCD0FF comes from the ISCC-NBS Dictionary of Color Names, a guide from the National Bureau of Standards. It sorts thousands of old color names into 267 numbered blocks. This code is the center of block 209, which the system calls very light violet. The Wikipedia article on lavender uses it for pale lavender, because some older color books in the dictionary put the name lavender in that block.
Lavender, lilac or periwinkle
Block 209 holds other names too, including lilac from one of the source books. The web color lavender, #E6E6FA, is grayer and nearer to white. Periwinkle, #CCCCFF, is bluer. Pale lavender has a touch more red, so it reads as a soft purple. Black text on it reaches 14.51 to 1.

